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Finding the Fourth Proportional to 253,057.42, 379,577.89 and 66,068.92

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Solution

The fourth proportional to 253,057.42, 379,577.89 and 66,068.92 is: 99,101.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,057.42 : 379,577.89 = 66,068.92 : x
  2. Step 2: Convert to fraction form
    253,057.42/379,577.89 = 66,068.92/x
  3. Step 3: Cross multiply
    253,057.42x = 379,577.89 × 66,068.92
  4. Step 4: Simplify right side
    253,057.42x = 25,078,301,248.18
  5. Step 5: Solve for x
    x = 25,078,301,248.18/253,057.42
  6. Step 6: Final answer
    x = 99,101.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.